I think she has some good points but seems to have a strong world view that is biasing the article away from her key points. Not that there is anything wrong with expressing your self this way but she does seem to have something against white men.
[edit] or at least, to call them racist/sexist is insane. I can somewhat understand the latter criticism coming from the perspective of someone who wants to do something about injustice, but then why are you in academic philosophy? That isn't where real-world change happens, people like that would be better off getting involved in social activism, whether they continue working in academia or not.
To be sure in all of these divides there is some substance to both sides (otherwise there wouldn't be an issue, all racism would marginalised flat earth level nonsense).
Also there are big problems with your conclusion. Philosophy departments are going to be overwhelmingly left leaning, so shouldn't that be an environment that doesn't exclude? Unless we conclude that virtually all left wing positions are just posturing, or that the problem isn't racism.